Which type of gamma ray source would be used to radiograph a weld in 150 mm thick steel plate?

Related MCQs

• If it were necessary to radiograph 18 cm (7 in.) thick steel product, which of the following gamma ray sources would most be used?
• Which of the following is an advantage of X ray over gamma ray sources for radiography?
• Which of the following is an advantage of X ray over gamma ray sources for radiography?
• Which of the following is an advantage of gamma ray over X ray sources for radiography?
• A good Cobalt-60 shot is made on a 7.6 cm (3 inches) steel casting using an exposure time of 10 minutes and a source-to-film distance of 91.5 (36 inches). If it is necessary to change the source-to-film distance to 61 cm (24 inches), what exposure time would produce a similar radiograph if all other conditions remain the same?
• Gamma ray or high voltage X ray radiography, using film without lead screens, is likely to result in:
• As radiation (X ray or gamma ray) energy is lowered:
• Gamma ray or high voltage X ray radiography, using film without lead screens, is likely to result in:
• The approximate radiographic equivalence factors for steel and copper at 220 kV are 1.0 and 1.4 respectively. If it is desirable to radiograph a 1.27 cm (0.5 inch) piece of copper, what thickness of steel would require about the same exposure characteristics?
• An advantage of a gamma ray source is: